
import time
# a+b+c = 1000 并且 a^2 + b^2 =c^2 a b c 都为自然数

start_time = time.time()
for a in range(1001):
    for b in range(0,1001):
        for c in range(0, 1001):
            if a+b+c == 1000 and a**2+b**2 == c**2:
                print(a, b, c)
end_time = time.time()
print(end_time-start_time)
